IOTA/IOTA-ES occultation update for (3843) OISCA / TYC 625-00773-1 event on 2024 Sep 15, 17:54 UT Visible from Summary ------- On 2024 Sep 15 UT, the 30.844 km diameter asteroid (3843) OISCA will occult a 12.0 mag star in the constellation Aries for observers along a path across . In the case of an occultation, the combined light of the asteroid and the star will drop by 4.35 mag to 16.31 mag (the magnitude of the asteroid) for at most 4.250 seconds. This update is based on, astrometry for the asteroid kindly provided by the IAU Minor Planet Center. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. The event at a glimpse ---------------------- * Rank: 98 * date and approx. time of event: 2024 Sep 15, 17:44 - 2024 Sep 15, 18:04 * geocentric midpoint of event [JD]: 2460569.24594808 * magnitude of target star: 11.98 * magnitude drop [mag]: 4.35 * estimated maximum duration [s]: 4.250 * Moon: 92 % sunlit, 69° distance * Sun: 143° distance * rough path description: The occultation path -------------------- * approximate projected width [km]: 47 * 1 sigma uncertainty interval [path widths]: +/- 0.36 * 1 sigma uncertainty interval [seconds]: +/- 7.0 * 1 sigma uncertainty interval approx RA,DE ["]: (+/- 0.025, +/- 0.011) * 1 sigma uncertainty ellipse (major, minor, PA): (0.027", 0.004", 68°) * approx speed of asteroid's shadow [km/s]: 7.2535 * website for maps: http://www.asteroidoccultation.com Path Coordinates: Occultation of TYC 625-00773-1 by 3843 OISCA on 2024 Sep 15 Centre Star Star Sun Path Limits Error Limits Alt E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4 Crn o ' " o ' " h m s o o o o ' " o ' " o ' " o ' " Latitude Latitude Latitude Latitude 52 0 0 -60 0 36 18 3 47.1 0 68 -26 -59 46 51 -60 14 25 -59 37 4 -60 24 20 .... 53 0 0 -59 48 15 18 3 46.9 1 67 -27 -59 34 29 -60 2 6 -59 24 41 -60 12 2 0.65 54 0 0 -59 35 42 18 3 46.7 1 66 -27 -59 21 53 -59 49 34 -59 12 4 -59 59 31 0.84 55 0 0 -59 22 55 18 3 46.3 2 65 -28 -59 9 5 -59 36 49 -58 59 15 -59 46 47 0.92 56 0 0 -59 9 55 18 3 45.8 3 64 -28 -58 56 4 -59 23 51 -58 46 13 -59 33 50 0.97 57 0 0 -58 56 43 18 3 45.2 3 63 -29 -58 42 50 -59 10 39 -58 32 58 -59 20 39 1.01 58 0 0 -58 43 17 18 3 44.4 4 62 -29 -58 29 24 -58 57 16 -58 19 31 -59 7 17 1.03 59 0 0 -58 29 39 18 3 43.5 4 62 -30 -58 15 44 -58 43 39 -58 5 50 -58 53 41 1.05 60 0 0 -58 15 49 18 3 42.5 5 61 -30 -58 1 53 -58 29 50 -57 51 58 -58 39 52 1.06 61 0 0 -58 1 46 18 3 41.3 5 60 -31 -57 47 48 -58 15 48 -57 37 53 -58 25 52 1.07 62 0 0 -57 47 31 18 3 40.0 6 59 -31 -57 33 32 -58 1 34 -57 23 35 -58 11 38 1.08 63 0 0 -57 33 3 18 3 38.5 7 58 -32 -57 19 3 -57 47 7 -57 9 6 -57 57 13 1.09 64 0 0 -57 18 24 18 3 36.9 7 57 -32 -57 4 23 -57 32 29 -56 54 25 -57 42 35 1.09 65 0 0 -57 3 33 18 3 35.1 8 56 -33 -56 49 31 -57 17 39 -56 39 32 -57 27 46 1.10 66 0 0 -56 48 30 18 3 33.1 8 56 -33 -56 34 27 -57 2 37 -56 24 27 -57 12 45 1.10 67 0 0 -56 33 16 18 3 31.1 9 55 -34 -56 19 12 -56 47 24 -56 9 12 -56 57 32 1.11 68 0 0 -56 17 50 18 3 28.8 10 54 -34 -56 3 45 -56 31 59 -55 53 45 -56 42 8 1.11 69 0 0 -56 2 14 18 3 26.4 10 53 -35 -55 48 8 -56 16 24 -55 38 7 -56 26 33 1.11 70 0 0 -55 46 26 18 3 23.8 11 52 -35 -55 32 20 -56 0 37 -55 22 18 -56 10 47 1.12 71 0 0 -55 30 29 18 3 21.1 11 51 -35 -55 16 22 -55 44 40 -55 6 19 -55 54 51 1.12 72 0 0 -55 14 21 18 3 18.2 12 51 -36 -55 0 13 -55 28 33 -54 50 10 -55 38 44 1.12 73 0 0 -54 58 3 18 3 15.1 13 50 -36 -54 43 54 -55 12 15 -54 33 51 -55 22 27 1.12 74 0 0 -54 41 35 18 3 11.8 13 49 -37 -54 27 26 -54 55 48 -54 17 23 -55 6 0 1.13 75 0 0 -54 24 58 18 3 8.4 14 48 -37 -54 10 48 -54 39 11 -54 0 45 -54 49 24 1.13 76 0 0 -54 8 11 18 3 4.8 14 47 -38 -53 54 2 -54 22 25 -53 43 58 -54 32 38 1.13 77 0 0 -53 51 16 18 3 1.0 15 46 -38 -53 37 6 -54 5 30 -53 27 2 -54 15 43 1.13 78 0 0 -53 34 12 18 2 57.0 16 45 -38 -53 20 2 -53 48 27 -53 9 58 -53 58 40 1.13 79 0 0 -53 17 0 18 2 52.8 16 45 -39 -53 2 50 -53 31 15 -52 52 46 -53 41 28 1.13 80 0 0 -52 59 41 18 2 48.5 17 44 -39 -52 45 30 -53 13 56 -52 35 26 -53 24 9 1.14 81 0 0 -52 42 14 18 2 44.0 17 43 -40 -52 28 3 -52 56 29 -52 17 58 -53 6 42 1.14 82 0 0 -52 24 39 18 2 39.2 18 42 -40 -52 10 29 -52 38 54 -52 0 24 -52 49 8 1.14 83 0 0 -52 6 58 18 2 34.3 19 41 -40 -51 52 48 -52 21 13 -51 42 43 -52 31 26 1.14 84 0 0 -51 49 11 18 2 29.2 19 40 -41 -51 35 0 -52 3 25 -51 24 56 -52 13 39 1.14 85 0 0 -51 31 17 18 2 24.0 20 40 -41 -51 17 7 -51 45 32 -51 7 3 -51 55 45 1.14 86 0 0 -51 13 18 18 2 18.5 21 39 -41 -50 59 8 -51 27 33 -50 49 4 -51 37 45 1.14 87 0 0 -50 55 14 18 2 12.8 21 38 -42 -50 41 5 -51 9 28 -50 31 1 -51 19 40 1.14 88 0 0 -50 37 5 18 2 7.0 22 37 -42 -50 22 56 -50 51 19 -50 12 53 -51 1 31 1.14 89 0 0 -50 18 52 18 2 0.9 22 36 -42 -50 4 43 -50 33 5 -49 54 40 -50 43 17 1.14 90 0 0 -50 0 35 18 1 54.7 23 35 -43 -49 46 27 -50 14 47 -49 36 24 -50 24 59 1.14 91 0 0 -49 42 14 18 1 48.2 24 34 -43 -49 28 6 -49 56 26 -49 18 4 -50 6 37 1.14 92 0 0 -49 23 50 18 1 41.6 24 33 -43 -49 9 43 -49 38 1 -48 59 41 -49 48 12 1.14 93 0 0 -49 5 24 18 1 34.8 25 32 -43 -48 51 18 -49 19 34 -48 41 16 -49 29 44 1.15 94 0 0 -48 46 55 18 1 27.8 25 32 -44 -48 32 50 -49 1 5 -48 22 49 -49 11 14 1.15 95 0 0 -48 28 25 18 1 20.6 26 31 -44 -48 14 20 -48 42 34 -48 4 20 -48 52 43 1.15 96 0 0 -48 9 53 18 1 13.2 27 30 -44 -47 55 50 -48 24 1 -47 45 50 -48 34 10 1.15 97 0 0 -47 51 21 18 1 5.6 27 29 -44 -47 37 18 -48 5 28 -47 27 19 -48 15 36 1.15 98 0 0 -47 32 48 18 0 57.9 28 28 -44 -47 18 47 -47 46 54 -47 8 48 -47 57 1 1.15 99 0 0 -47 14 16 18 0 49.9 28 27 -45 -47 0 15 -47 28 21 -46 50 17 -47 38 27 1.15 100 0 0 -46 55 44 18 0 41.8 29 26 -45 -46 41 44 -47 9 48 -46 31 47 -47 19 53 1.15 101 0 0 -46 37 13 18 0 33.5 29 25 -45 -46 23 14 -46 51 16 -46 13 18 -47 1 20 1.15 102 0 0 -46 18 43 18 0 25.0 30 24 -45 -46 4 46 -46 32 45 -45 54 51 -46 42 49 1.15 103 0 0 -46 0 16 18 0 16.4 31 23 -45 -45 46 20 -46 14 17 -45 36 25 -46 24 19 1.15 104 0 0 -45 41 51 18 0 7.6 31 22 -45 -45 27 56 -45 55 50 -45 18 2 -46 5 52 1.15 105 0 0 -45 23 29 17 59 58.6 32 21 -45 -45 9 35 -45 37 27 -44 59 42 -45 47 28 1.15 106 0 0 -45 5 10 17 59 49.4 32 20 -45 -44 51 17 -45 19 7 -44 41 26 -45 29 7 1.15 107 0 0 -44 46 55 17 59 40.1 33 19 -45 -44 33 4 -45 0 50 -44 23 13 -45 10 49 1.15 108 0 0 -44 28 44 17 59 30.6 33 18 -45 -44 14 54 -44 42 38 -44 5 4 -44 52 36 1.15 109 0 0 -44 10 38 17 59 21.0 34 17 -45 -43 56 50 -44 24 31 -43 47 1 -44 34 28 1.15 110 0 0 -43 52 37 17 59 11.2 34 16 -45 -43 38 50 -44 6 28 -43 29 2 -44 16 24 1.15 111 0 0 -43 34 42 17 59 1.3 35 15 -45 -43 20 56 -43 48 31 -43 11 9 -43 58 27 1.15 112 0 0 -43 16 52 17 58 51.2 35 14 -45 -43 3 8 -43 30 41 -42 53 22 -43 40 35 1.15 113 0 0 -42 59 10 17 58 41.0 36 13 -44 -42 45 27 -43 12 56 -42 35 42 -43 22 49 1.15 114 0 0 -42 41 34 17 58 30.6 36 11 -44 -42 27 52 -42 55 19 -42 18 8 -43 5 11 1.15 115 0 0 -42 24 5 17 58 20.1 36 10 -44 -42 10 25 -42 37 49 -42 0 42 -42 47 39 1.15 116 0 0 -42 6 44 17 58 9.5 37 9 -44 -41 53 6 -42 20 26 -41 43 24 -42 30 16 1.15 117 0 0 -41 49 31 17 57 58.7 37 8 -44 -41 35 55 -42 3 12 -41 26 14 -42 13 1 1.15 118 0 0 -41 32 27 17 57 47.9 38 7 -43 -41 18 52 -41 46 6 -41 9 12 -41 55 54 1.15 119 0 0 -41 15 32 17 57 36.9 38 6 -43 -41 1 58 -41 29 10 -40 52 20 -41 38 56 1.15 120 0 0 -40 58 46 17 57 25.8 38 5 -43 -40 45 14 -41 12 22 -40 35 37 -41 22 7 1.15 121 0 0 -40 42 10 17 57 14.6 39 3 -43 -40 28 40 -40 55 45 -40 19 3 -41 5 29 1.15 122 0 0 -40 25 44 17 57 3.3 39 2 -42 -40 12 15 -40 39 17 -40 2 40 -40 49 0 1.15 123 0 0 -40 9 29 17 56 51.9 39 1 -42 -39 56 2 -40 23 0 -39 46 27 -40 32 42 1.15 124 0 0 -39 53 25 17 56 40.4 39 360 -41 -39 39 59 -40 6 55 -39 30 26 -40 16 35 1.15 125 0 0 -39 37 32 17 56 28.9 40 359 -41 -39 24 7 -39 51 0 -39 14 35 -40 0 39 1.14 126 0 0 -39 21 50 17 56 17.2 40 357 -41 -39 8 27 -39 35 17 -38 58 56 -39 44 55 1.14 127 0 0 -39 6 21 17 56 5.5 40 356 -40 -38 52 59 -39 19 46 -38 43 30 -39 29 23 1.14 128 0 0 -38 51 4 17 55 53.7 40 355 -40 -38 37 44 -39 4 27 -38 28 15 -39 14 3 1.14 129 0 0 -38 35 59 17 55 41.9 41 354 -39 -38 22 41 -38 49 21 -38 13 13 -38 58 56 1.14 130 0 0 -38 21 8 17 55 30.0 41 352 -39 -38 7 51 -38 34 28 -37 58 24 -38 44 2 1.14 131 0 0 -38 6 30 17 55 18.0 41 351 -38 -37 53 14 -38 19 49 -37 43 49 -38 29 22 1.14 132 0 0 -37 52 5 17 55 6.0 41 350 -38 -37 38 52 -38 5 23 -37 29 27 -38 14 55 1.14 133 0 0 -37 37 55 17 54 54.0 41 349 -37 -37 24 43 -37 51 11 -37 15 19 -38 0 42 1.14 134 0 0 -37 23 59 17 54 41.9 41 347 -37 -37 10 48 -37 37 14 -37 1 25 -37 46 43 1.14 135 0 0 -37 10 17 17 54 29.8 41 346 -36 -36 57 8 -37 23 31 -36 47 46 -37 32 59 1.14 136 0 0 -36 56 51 17 54 17.7 41 345 -36 -36 43 42 -37 10 2 -36 34 22 -37 19 30 1.14 137 0 0 -36 43 39 17 54 5.5 41 344 -35 -36 30 32 -36 56 49 -36 21 12 -37 6 16 1.14 138 0 0 -36 30 43 17 53 53.3 41 342 -35 -36 17 37 -36 43 52 -36 8 19 -36 53 18 1.14 139 0 0 -36 18 3 17 53 41.2 41 341 -34 -36 4 58 -36 31 10 -35 55 41 -36 40 35 1.14 140 0 0 -36 5 38 17 53 29.0 41 340 -33 -35 52 35 -36 18 45 -35 43 18 -36 28 8 1.14 141 0 0 -35 53 30 17 53 16.9 41 339 -33 -35 40 29 -36 6 35 -35 31 13 -36 15 58 1.14 142 0 0 -35 41 39 17 53 4.7 41 337 -32 -35 28 38 -35 54 42 -35 19 23 -36 4 4 1.14 143 0 0 -35 30 4 17 52 52.6 41 336 -31 -35 17 5 -35 43 6 -35 7 50 -35 52 27 1.14 144 0 0 -35 18 46 17 52 40.5 41 335 -31 -35 5 48 -35 31 47 -34 56 35 -35 41 7 1.14 145 0 0 -35 7 45 17 52 28.4 40 334 -30 -34 54 49 -35 20 46 -34 45 36 -35 30 5 1.14 146 0 0 -34 57 2 17 52 16.3 40 332 -29 -34 44 6 -35 10 1 -34 34 55 -35 19 20 1.14 147 0 0 -34 46 37 17 52 4.3 40 331 -29 -34 33 42 -34 59 35 -34 24 31 -35 8 52 1.14 148 0 0 -34 36 29 17 51 52.4 40 330 -28 -34 23 35 -34 49 26 -34 14 25 -34 58 43 1.14 149 0 0 -34 26 40 17 51 40.5 40 329 -27 -34 13 47 -34 39 35 -34 4 37 -34 48 52 1.14 150 0 0 -34 17 8 17 51 28.6 39 328 -27 -34 4 17 -34 30 3 -33 55 8 -34 39 19 1.14 151 0 0 -34 7 56 17 51 16.8 39 327 -26 -33 55 5 -34 20 50 -33 45 57 -34 30 5 1.14 152 0 0 -33 59 2 17 51 5.1 39 325 -25 -33 46 12 -34 11 55 -33 37 5 -34 21 9 1.14 153 0 0 -33 50 27 17 50 53.5 38 324 -25 -33 37 38 -34 3 19 -33 28 31 -34 12 33 1.14 154 0 0 -33 42 11 17 50 41.9 38 323 -24 -33 29 23 -33 55 2 -33 20 17 -34 4 15 1.14 155 0 0 -33 34 14 17 50 30.4 38 322 -23 -33 21 27 -33 47 5 -33 12 22 -33 56 17 1.14 156 0 0 -33 26 37 17 50 19.0 37 321 -22 -33 13 51 -33 39 27 -33 4 45 -33 48 38 1.14 157 0 0 -33 19 19 17 50 7.7 37 320 -22 -33 6 34 -33 32 8 -32 57 29 -33 41 20 1.14 158 0 0 -33 12 22 17 49 56.6 36 319 -21 -32 59 37 -33 25 10 -32 50 32 -33 34 20 1.14 159 0 0 -33 5 43 17 49 45.5 36 318 -20 -32 52 59 -33 18 31 -32 43 55 -33 27 41 1.14 160 0 0 -32 59 25 17 49 34.5 35 317 -19 -32 46 42 -33 12 12 -32 37 38 -33 21 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44 17 44 51.5 10 290 11 -33 3 52 -33 29 40 -32 54 43 -33 38 55 1.19 -162 0 0 -33 24 10 17 44 48.3 9 290 11 -33 11 17 -33 37 7 -33 2 7 -33 46 23 1.19 -161 0 0 -33 31 58 17 44 45.2 9 289 12 -33 19 4 -33 44 55 -33 9 53 -33 54 13 1.20 -160 0 0 -33 40 7 17 44 42.5 8 288 13 -33 27 12 -33 53 6 -33 18 0 -34 2 24 1.20 -159 0 0 -33 48 38 17 44 40.0 7 288 14 -33 35 42 -34 1 38 -33 26 29 -34 10 57 1.21 -158 0 0 -33 57 31 17 44 37.8 6 287 14 -33 44 33 -34 10 32 -33 35 20 -34 19 51 1.22 -157 0 0 -34 6 44 17 44 35.9 5 287 15 -33 53 46 -34 19 47 -33 44 31 -34 29 7 1.23 -156 0 0 -34 16 19 17 44 34.3 4 286 16 -34 3 19 -34 29 23 -33 54 4 -34 38 45 1.24 -155 0 0 -34 26 16 17 44 32.9 4 286 17 -34 13 14 -34 39 21 -34 3 58 -34 48 43 1.26 -154 0 0 -34 36 33 17 44 31.9 3 285 18 -34 23 30 -34 49 39 -34 14 13 -34 59 3 1.29 -153 0 0 -34 47 11 17 44 31.1 2 284 18 -34 34 6 -35 0 18 -34 24 49 -35 9 43 1.35 -152 0 0 -34 58 9 17 44 30.6 1 284 19 -34 45 3 -35 11 18 -34 35 45 -35 20 44 1.51 -151 0 0 -35 9 28 17 44 30.4 0 283 20 -34 56 21 -35 22 39 -34 47 1 -35 32 6 2.81 Uncertainty in time = +/- 7 secs Prediction of 2023 Jul 15.6 Data for the target star ------------------------ * name: TYC 625-00773-1 * constellation : Aries * BCRS position with proper motion to date of event [h,m,s ; °,',"] RA: 01 51 34.8259 DE: +10 38 11.041 * GCRS Astrometric position with proper motion and parallax to date of event [h,m,s ; °,',"] RA: 01 51 34.8259 DE: +10 38 11.041 * position source: Gaia DR3 * standard error: RA,DE [mas]: (0.200,0.100) * V mag [mag]: 12.0 * B mag [mag]: 12.4 * Diameter [mas]: 0.00 * remarks: Data for the minor planet ------------------------- * general information: (number) name: (3843) OISCA asteroid class: approx. diameter [km]: 31 approx. diameter ["]: 0.016 distance from Earth [AU]: 2.61420 asteroid position offset in RA [mas]: 0 asteroid position offset in DE [mas]: 0 * orbital information: orbit source: JPL#39 date of fit: 2023 Apr 24 source of used astrometry: MPC, JPL number of used observations: 0 number of rejected observations: 0 time covered by the observations: 1800 Jan 01 - 1800 Jan 01 1 sigma uncertainty ellipse (major, minor, PA): 0.027", 0.004", 67.947° remarks: * orbital elements for (3843)OISCA : Mean anomaly = 335.9091220861 deg Arg. of pericenter = 23.6278971284 deg Long. of node = 28.2953354193 deg Inclination = 3.9276747022 deg Eccentricity = 0.1453663751 Semimajor axis = 3.9843703603 AU Perihelion dist = 3.4051768839 AU Mag: H = 10.88, G = 0.15 Epoch of elements : MJD 60568.74594588 TDT (2024 Sep 15.7459) ------ occelmnt file for Occult BEGIN ----------------------------------- JPL#392023Apr24,4.25,2024,9,15,17.902754,0.168520,-0.731668,-3.989414,-0.919919,-0.003242,-0.001143,0.000001,0.000000 124.5016,10.7605,-89.80,2.63,False TYC 625-00773-1,1.85967385,10.6364002,12.36,11.98,11.77,0.0,0,,1.88182280,10.7605185,4.35,4.11,0,0,0 3843,OISCA,16.31,30.844,2.6142,0,0,-0.911,-3.09,,3.0,0 0,335.8167,2024,9,15,23.6279,28.2953,3.9277,0.14537,3.98437,3.40518,10.87,5.0,0.15 1.357,0.0270,0.0040,68,0.0058,Known errors,1.05,0,-1,-1 20240915_0773-1,60140.56 ------ occelmnt file for Occult END ----------------------------------- ============================================ Calculator (s): Steve Preston Date of update: 2023 Jul 15, 13:32 UT Steve Preston 7640 NE 32nd St Medina, WA 98039 stevepr@acm.org